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Data Analyst @ Udacity [email protected] Eli Kastelein

Eli Datasense Talk

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Data Analyst @ [email protected]

Eli Kastelein

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data

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How data became an important resource

What data scientists do

How Udacity uses data

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1. They don’t know what it’s saying

2. They ignore what it’s saying

2 reasons companies struggle with their big data

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1. They don’t know what it’s saying

2. They ignore what it’s saying

2 reasons companies struggle with big data

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Data analysts turn data into actionable business insights

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Engineering

BusinessDesign

Data Analysts

Product

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data request

build something (model, chart, report,

dashboard, test)

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How Udacity uses Data

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https://www.dropbox.com/s/uf7eoyxj5m0dofn/Screenshot%202016-10-13%2015.31.18.png?dl=0Course Recommendations

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A/B Testing

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Counting

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4 reasons why counting is hard1. Counting requires numerous, often arbitrary decisions2. Counting is easy to understand3. Counting is often high-stakes

http://daynebatten.com/2016/06/counting-hard-data-science/

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WSJ, Sep 2016

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Survival Analysis

Kaplan–Meier estimator

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3. Data VisualizationWhy does it matter?

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Graphic design for scientistsKaren Cheng & Marco RolandiNature Nanotechnology 10, 1084 (2015)

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Small multiples

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Dashboard Design

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